21436370

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:722

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 19430830

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 257, 439, 514, 878, 1285, 2195, 2570, 4390, 4883, 8341, 9766, 16682, 24415, 41705, 48830, 83410, 112823, 225646, 564115, 1128230, 2143637, 4287274, 10718185, 21436370]

約数ペア:

[(1, 21436370), (2, 10718185), (5, 4287274), (10, 2143637), (19, 1128230), (38, 564115), (95, 225646), (190, 112823), (257, 83410), (439, 48830), (514, 41705), (878, 24415), (1285, 16682), (2195, 9766), (2570, 8341), (4390, 4883)]